Drillium Dude 

Could you elaborate? Looks mighty similar to the one in the pic in post 11; rounded center, with a small heart cast into the top.

DD

jiangshi

Look at how it is joined to the seat stays.

curbtender

Was $275 the marked price? Last weekend was half off.

Drillium Dude 

The Holidays approacheth; prices always reflect the season

DD

Lattz

Right, the one posted by DD, where we see, that came with a different fork as well has braze-ons for the joint.
https://cicli-berlinetta.com/product...-blue-55-5-cm/
The Team Gewiss with unicrown I sent does not have those, and it is a Primato. Or?
https://www.vintageveloberlin.de/sho...ewiss_SHOP.php

I would laugh my A55 off it it would turn out to be a diamante titanio rattlecanned to conceal its identity (no it won't)

Drillium Dude 

Well, hmmm - I blew it on my own post. More concerned with the BB shell pics, I missed that the Primato I shared also had reinforcing at the brake bridge edges. In my defense, the definitive shot was photo 15 of 15

Since every subsequent photo of a Primato I've uncovered shows reinforcing, I'm assuming it was a feature of the model. Back to the drawing board.

Where is @MauriceMoss when you need him?

DD

Lattz

Beside its fun doing it for kicks, as no one runs there to grab it seemingly even if costs less than a supermarket crap, I must admit rattlecan or not I fainted on the price of Primato frames as I was looking for the pics...

When Robert sent in the second batch of pics I was laughing as recenly I was looking for Campy brake adjusters and got shocked how expensive they become (shops around me dare to ask 30 eur or so??), so made the maths 275 including some parts but above all one adjuster definitely.

Lattz

Based on this ebay ad: it could be a Giro D'Italia as well... it has similar features, incl the brake bridge and the BB shell, built in Neuron (some in Brain) i/o EL.
The seat stay cap is really similar, but based on how many variants I've seen on the Primatos, it doesn't matter.




others:
https://ciclicorsaclassico.com/galle...-giro-ditalia/
https://fotos.rennrad-news.de/p/319881

One thing which might be a hint but a misleading as well or not important at all is the diamond shaped bottle cage braze-ons.
Robert's have diamond shaped ones.
Primatos either don't have on the seat tube or have round ones.
The Milka from Germany in the above link also has round ones.

And above all its an Italian brand, Sergio went working and did what he want based on if he had a quarrell with wife or too much chianti.

Robvolz 

For the record, it is a size 56

Robvolz 

I’m back in San Rafael and can take more pics if anyone is interested.

message me.

Robvolz 

jiangshi

All those pictures and no pictures of the rear drop outs, or the rear brake cabling, which would help immensely.

Robvolz 

That’s because I’m an idiot.

(I also said message me)

rear drop outs = short campy style w “De Rosa”engraved on them plus rear derailleur hanger.

fork had the same engravings, but easier seen on the other tine.

I did not see any rear brake cabling. No braze-ons, exterior or interior. And no rear brake.

As earlier stated. I don’t want this bike.

I left town. This co-op doesn’t box and ship. I will be back in 2 weeks if someone needs further help.

Robvolz 

I was back down there….

here are some more pics.

and, I gave them a deposit to hold it for a couple weeks in case someone wants it.

SJX426 

White industries eccentric flip flop hub too! Didn't know they existed. Now that I have learned something today, I can feel like I know somehting!

Robvolz 

the fork does seem original to the bike.

Do we know what frame model this is? I never thought to place a magnet on it, but I did "ping" it a couple times to listen for rattles, and to my untrained ears, It sounded like steel.

GrayJay

In early 90's tubing supplier Columbus was fabricating and supplying complete unicrown forks that some frame manufactures used. They had columbus stamping on the drop-outs and on the fork steer tube (hidden when fork installed in frame) but no other markings. Though they may look like they came off a MTB, these unicrown forks were slightly lighter than similar lug/crown construction forks so appealed to steel frame weight weenies (when that was a thing). Along with then latest advancements of thin-wall higher strength steel tubesets (such as EL-OS, Genius, Spirit) which surpassed the older unhardened Cr-Mo metallurgy tubesets (like SL,SP, SLX, Max), the unicrown forks helped keep steel bikes a bit more weight competitive with alu/titanium/carbon frames. The Columbus supplied unicrown forks were TIG welded, probably was easier for existing lug-frame manufactures just to use the complete unicrown forks rather than intermixing TIG welding to their shop.

I received one of the Columbus unicrowns on a EL-OS tubeset bike that I bought new in 1992. First one I had cracked along the TIG welds within about 1 year use, warranty replacement fork that I received is still going strong today though the original chrome is in terrible shape. The one other complaint I had about those forms was that they had tight tire clearance would only take somewhere around a 25mm tire, when I tried using with some larger tubular tires I had problems with the tire contacting and rubbing the underside of the fork when it flexed while riding.

majmt 

Here are a few detail shots of my pretty-much original ‘96 Primato for comparison - I see a few similarities. I don’t think they spec’d Record components over too many years - seems like Chorus was more common in other years especially the “Neo Primato”.




BB shell looks somewhat similar - mine does not have the “De Rosa” name recessed as the OP bike.

The brake bridges look similar - mine has flat diamond shaped reinforcements around the brazing.


The cut-out above the rear drop is bigger on mine, otherwise pretty similar.



Including the webbed BB shell just because it’s so cool.


Hard to compare the FD hangars.

majmt 

This is interesting to me. Is it possible the “dent” is not really a dent but an imperfect fill job after grinding off the hood over the internal cable routing port when it was converted to a fixie? Looks to be in about the right spot.

Robvolz 

Thank you so much for your well thought out responses. Plus, photo evidence.

I also wondered if that dent was caused by the removal of the cable guide but it is further forward by at least an inch.

You are correct that the rear drops are thicker. Odd to me.

could this be one of the first rounds of gravel designed bikes?

is this the era that people started switching over to carbon fiber for forks?

the forks are stamped DeRosa on the drops.

I read the explanation how Columbus provided the metal and help with these forks, but that TIG welding is so sloppy

granted, no one is supposed to have their head on the ground looking up at that angle.

it fits me perfectly, but I just don’t need another project, Especially one that needs dent removal, new paint and decals, plus brakes, etc.

Robvolz 

Thank you so much for your well thought out responses. Plus, photo evidence.

I also wondered if that dent was caused by the removal of the cable guide but it is further forward by at least an inch.

You are correct that the rear drops are thicker. Odd to me.

could this be one of the first rounds of gravel designed bikes?

is this the era that people started switching over to carbon fiber for forks?

the forks are stamped DeRosa on the drops.

I read the explanation how Columbus provided the metal and help with these forks, but that TIG welding is so sloppy

granted, no one is supposed to have their head on the ground looking up at that angle.

it fits me perfectly, but I just don’t need another project, Especially one that needs dent removal, new paint and decals, plus brakes, etc.

curbtender

Escaped the walls of the recyclery?

https://sfbay.craigslist.org/nby/bik...597252692.html

De Rosa Track Bike Campy/White ind. build - $650 (San Rafael)

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